Nutrition experts agree that people who eat breakfast generally weigh less, have better cognitive(知的・精神的作用の、認識の)performance throughout the day, and have better overall nutrition(栄養摂取)than those who do not, but a disturbing trend in the breakfast cereal industry may be undermining(むしばむ、ダメにする)the meal’s health benefits. A new analysis of cereals sold in the US found that many brands, especially those marketed to children, are actually more than 50% sugar by weight and contain as much sugar as a glazed doughnut. Many of these brands have also boosted the sugar and sodium(ナトリウム)content of formulations sold on US markets, while the same cereals in other countries contain less of these ingredients.